Required fields for Worker Version 2 SOAP Web Service

Summary

I need to know the required fields when using the Worker Version 2 SOAP Web Service

Content

I'm testing with SOAP UI, the Worker Version 2 SOAP Web Service for Oracle Cloud HCM. 
I need to perform this 4 operations: createWorker, updatePerson, createAssignment, updateAssignment.
This is de WSDL File: https://fa-eoxa-test-saasfaprod1.fa.ocs.oraclecloud.com:443/hcmService/WorkerServiceV2?WSDL

I could performed the first one, createWorker, thanks to this tutorial:
https://www.apps2fusion.com/oracle-fusion-online-training/fusion-applications/fusion-payroll/2406-creating-employee-record-using-webservice-in-oracle-fusion-hcm-cloud-application

However, I couldn't find any information for the rest.

What I need are the required fields for each of the 4 operations.

Could you please help me? Thank you in advance.